Sickest

adjective

1. affected by an impairment of normal physical or mental function

   “ill from the monotony of his suffering”

   Synonymsill

2. feeling nausea; feeling about to vomit

   Synonymsnauseatednauseousqueasysickish

3. affected with madness or insanity

   “a man who had gone mad”

   Synonymsbrainsickcrazydementeddisturbedmad

4. having a strong distaste from surfeit

   “grew more and more disgusted”

   Synonymsdisgustedfed upsick oftired of

5. (of light) lacking in intensity or brightness; dim or feeble

   “the pale light of a half moon”

   Synonymspalepallidwan

6. deeply affected by a strong feeling

   “sat completely still, sick with envy”